I did the Mission to secure the Psi Velorum sector and fight one time against the Romulans and two times against the Federation from the mirror universe. The Romulans were the same level as I (Commander 3) but the guys from the mirror universe were +12.
But I am very angrily that I did all fights (each time kill 9 ships - and that was really hard) and I didn't received the points for the fights against the guys from the mirror universe.
And also in my missions overview on the right side stand only 1/3.
And this is not the first time. I've fought prior against Zilant ships +25 and I also didn't get any points.
Sounds like an instance mismatch - Terran Empire forces are not supposed to be encountered within or through Psi Velorum.
Terran Empire usually only appears in Beta Ursae and it's neighboring sectors.
So there is an error, but it's not the mission itself - the mission acts correctly, as it only counts successfully completed encounters that fit the mission criteria.
The bug is "simply" that you are encountering enemies that you aren't supposed to encounter.